Comment 11 for bug 823955

I have Last.fm, Dropbox, indicator-sysmonitor, my-weather-indicator, keyboard layout, messaging, battery, Bluetooth, sound, time, user switch, and power menus in my panel, and NM is the only one that has this issue.
I haven't tested the Firefox one, but I would guess that it and NM are doing something different to cause this.

From playing around with it, I've noticed that sometimes it doesn't flicker the first time, but clicking it again causes the flicker. I can't find any pattern.